{"data":{"schemaVersion":"realm.temporal-relationships.v1","temporalSemantics":{"validTime":{"granularity":"date","bounds":"inclusive","nullStart":"start date not published in the upstream history row","nullEnd":"open-ended in the upstream history row; not independent proof of present control"},"transactionTime":{"observedAt":"2026-10-13T11:19:05.459773+00:00","meaning":"time the checksum-addressed MDRS artifacts were observed by the PostgreSQL ingestion"},"derivation":{"controllerControlsOperator":"intersection of controller and operator valid-time intervals evidenced through this mine","currentIdentity":"current controller and operator are asserted only by the MDRS Mines snapshot"}},"current":{"mine":{"type":"mine","id":"0405276","name":"Briggs Mine"},"operator":{"type":"operator","id":"0146833","name":"DV Natural Resources, LLC"},"controller":{"type":"controller","id":"0128081","name":"Ana M  Clarke"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"controller_controls_mine","subject":{"type":"controller","id":"M07931","name":"Canyon Resources Corp"},"object":{"type":"mine","id":"0405276","name":"Briggs Mine"},"validFrom":"1990-08-27","validTo":"2008-03-17","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0405276|M07931|1990-08-27|2008-03-17"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L11967","name":"CR Briggs"},"object":{"type":"mine","id":"0405276","name":"Briggs Mine"},"validFrom":"1995-11-01","validTo":"2016-05-12","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0405276|L11967|1995-11-01|2016-05-12"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M07931","name":"Canyon Resources Corp"},"object":{"type":"operator","id":"L11967","name":"CR Briggs"},"validFrom":"1995-11-01","validTo":"2008-03-17","current":false,"derived":true,"evidenceMineId":"0405276","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0405276|L11967|1995-11-01|M07931|1990-08-27|142364"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0104913","name":"Atna Resources Ltd."},"object":{"type":"mine","id":"0405276","name":"Briggs Mine"},"validFrom":"2008-03-18","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0405276|0104913|2008-03-18|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0104913","name":"Atna Resources Ltd."},"object":{"type":"operator","id":"L11967","name":"CR Briggs"},"validFrom":"2008-03-18","validTo":"2016-05-12","current":false,"derived":true,"evidenceMineId":"0405276","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0405276|L11967|1995-11-01|0104913|2008-03-18|18344"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"0146833","name":"DV Natural Resources, LLC"},"object":{"type":"mine","id":"0405276","name":"Briggs Mine"},"validFrom":"2016-05-13","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0405276|0146833|2016-05-13|"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0128081","name":"Ana M  Clarke"},"object":{"type":"mine","id":"0405276","name":"Briggs Mine"},"validFrom":"2016-05-13","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0405276|0128081|2016-05-13|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0128081","name":"Ana M  Clarke"},"object":{"type":"operator","id":"0146833","name":"DV Natural Resources, LLC"},"validFrom":"2016-05-13","validTo":null,"current":true,"derived":true,"evidenceMineId":"0405276","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0405276|0146833|2016-05-13|0128081|2016-05-13|25645"}}],"coverage":{"historyRecords":3,"edgeCount":8,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"0405276","dataSource":"postgres","snapshotId":"2026-10-13T11:19:05.459773+00:00","completedAt":"2026-10-13T11:26:59.401Z","sourceCount":20,"totalRows":17906804,"relationshipSemantics":"valid time; null validTo means current or open-ended in the source"}}